This installation of TCS A4X Decoder is for HO Scale RSD 4/5 and was performed by a TCS customer.


Important Soldering Tip:
Please do not use any flux either liquid or paste on the mother board. It will damage it. Use only Rosin core solder approved for electronics use.
We recommend to use only Kester "44" rosin core, SN63PB37, .015" diameter, part number 24-6337-0007.
This can be ordered from Techni-Tool under Techni-Tool part number 488SO157

http://www.techni-tool.com

This is the older design what was produced by KATO but sold by ATLAS. It had a single lamp in the middle of the chassis and lit up both ends regardless of which way the locomotive was traveling. Remove the old circuit board and trim the weights at either end so the A4X fits. Next trim the plastic light guides and polish the cut ends with very fine 'wet n dry' sandpaper till the ends are smooth. Wire the A4X as per instructions. LED's were added at each end so they were resting against the 'new' ends of the light guides.  The pictured loco is in the livery of my freelance line 'NORTH EASTERN'

 


Other solder tips: When stripping wire, only strip a tiny little bit of the insulation. Strip no more then a 1/64 of an inch. When the wire gets tinned with solder the insulation will shrink back more. Try to not expose any more wire then half the length of the solder pad at most. In no case should solder or exposed wire wire ever be outside the boundary of the the solder pad you are attaching a wire to.
Click here for important information on properly Stripping and Tinning wire


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